The patents of which machines catapulted britain to the lead position of iron exports around the world?
1)puddling furnace and flying shuttle
2)puddling furnace and water frame
3)grooving rolling mill and puddling furnace
4)grooved rolling mill and water frame

The correct answer is number 3) grooving rolling mill and puddling furnace.

The patents of the grooving rolling mill and puddling furnace catapulted Britain to the lead position of iron exports around the world.

Britain played a key role in the transformation of the industry. Henry Cort was the English inventor who discovered the puddlinbg process that allows him to convert pig iron into wrought iron. Groving rolling mills also created a great impact in the British industry in that they facilitated the manufacturing of iron during the Industrial Revolution, facilitating the exports of British products to other parts of the world.

what are the choices?